Home / 13,618.23-20,427.35-11,907.51

Finding the Fourth Proportional to 13,618.23, 20,427.35 and 11,907.51

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Solution

The fourth proportional to 13,618.23, 20,427.35 and 11,907.51 is: 17,861.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.23 : 20,427.35 = 11,907.51 : x
  2. Step 2: Convert to fraction form
    13,618.23/20,427.35 = 11,907.51/x
  3. Step 3: Cross multiply
    13,618.23x = 20,427.35 × 11,907.51
  4. Step 4: Simplify right side
    13,618.23x = 243,238,814.86
  5. Step 5: Solve for x
    x = 243,238,814.86/13,618.23
  6. Step 6: Final answer
    x = 17,861.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.